Feature: 1. 1.5- IN- 1 - Each test strip can accurately measure PH value, total alkalinity, hardness, free chlorine and cyanuric acid, etc. It can provide accurate info for keeping your pool, spa or hot tub crystal clear. 2. 2.ECONOMICAL - This kit includes 50pcs pool test strips which will last 4-6 months testing 2-3 times per week.Compared to liquid testing kits, the test strip is faster and more accurate. 3. 3.QUICK AND EASY-- These testing strips provide a reliable, accurate reading in seconds so you can enjoy your swimming. Quickly test the PH, residual chlorine, bromine, total chlorine, total alkalinity and total hardness in water by colorimetric method. 4. 4.RESONABLE DESIGN-- With the distinct and no bleed color pads, our test strips will tell you all you need to know about the chemicals in your pool. Includes a reusable color chart comparator, which is on the side of the storage bottle. Suitable for maintaining healthy water chemistry in swimming pool or spa. Specification: Product name: 5 in 1 water quality test paper Product weight: 32g Product size: 95*35mm Product packaging: bottled Product material: paper Packing list: 50*Test Strip Package List: